== sanity test 184c: Concurrent write and layout swap ==== 17:15:04 (1787606104) 31+0 records in 31+0 records out 32505856 bytes (33 MB, 31 MiB) copied, 3.45552 s, 9.4 MB/s 26+0 records in 26+0 records out 27262976 bytes (27 MB, 26 MiB) copied, 2.84091 s, 9.6 MB/s ref file size: ref1(32505856), ref2(27262976) 1984+0 records in 1984+0 records out 32505856 bytes (33 MB, 31 MiB) copied, 9.58909 s, 3.4 MB/s Copied 376832 bytes before swapping layout...